Method for manufacturing hollow body elements, hollow body element, component mounting, sequential composite tool for manufacturing hollow body elements and rolling mechanism

摘要

Process for manufacturing elements hollow body (200) such as nut elements for attachment to components made generally plate (280), in particular for the manufacture of hollow body with an outer contour at least essentially square or rectangular (202), through the cut to length individual elements of a profile present in the form of a profiled rod (1) or a coil after prior stamping of holes (204) in the profile, since the case with the subsequent formation of a thread cylinder (206) using a sequential composite tool (10) with several workstations (a, B and D, B and D), in which the respective machining is carried out, characterized by the steps following: a) that in a first step starting from a rectangular cross sectional profile (1) a process step leading to a cylindrical depression (208) in a first wide side (2) of the profile and a cylindrical projection is performed recess (210) forming a rivet section in a second wide side (3) opposite the first wide side (2) of the profile, which is surrounded by a depression annular (212), b) in a second step punctured or removed by embossing a remaining crossbar (218) between the bottom (214) of the cylindrical depression and bottom (216) of the hollow cylindrical projection (210) to set a continuous hole (204), c) in a third stage elements hollow body (200) of the profile are separated and optionally provided with a thread (206).